Error when unban in console

[TheMisterMH]

When I a player unban in a console I am getting the follow error:

[10:47:12] [Craft Scheduler Thread - 20/WARN]: Exception in thread "Craft Scheduler Thread - 20"
[10:47:12] [Craft Scheduler Thread - 20/WARN]: org.apache.commons.lang.UnhandledException: Plugin Bans v0.50b-8 generated an exception while executing task 3575
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at com.minecraftdimensions.bungeesuitebans.tasks.PluginMessageTask.run(PluginMessageTask.java:20)
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:67)
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
... 3 more

Spigot build: 1477